Furnace



(No Model.)

F. A. JONES.

PURNAGE. No.. 528,944. Patented Nov. 13, 1894.

'TEEES STATES PATENT OFFICE.

FLORENTINE A. .I ONES, 0F BOSTON, MASSACHUSETTS.

FU RNACE.

SPECIFICATION forming part of Letters Patent No. 528,944, dated November13, 1894.

Application tiled January 30, 1894. Serial No. 49 8,529. .(No model.) y

To all wiz/0m it may con/067171,:

Be it known that I, FLORENTINE A. JONES, of Boston, in the county ofSuffolk and State of Massachusetts, have invented a new and usefulImprovement in Furnaces, of which the following, taken in connectionwith the accompanying drawings, is a specification.

My invention relates to a device for admitting heated air to that partof a furnace tire chamber that is above the top of the tire door, andconsists in the construction and arrangement of an air appliance adaptedto admit, and heat during its passage through it, air to the firechamber from the front Wall above the re door, the object being tofurnish a supply of heated air, or air and steam, to that parl of thelire chamber in which the combustibles are in greatest need thereof.This object I attain by means of the mechanism shown in the accompanyingdrawings, in Which- Figure l is a section of a boiler furnace ofordinary construction, showing my air supplier located over the firedoor. Fig. 2 is a longitudinal vertical section of my air supplier. Fig.3 is a cross vertical section of the air supplier. Fig. 4 is a crosssection showing a modification of my air supplier.

In Fig. 1,1 have shown in section some parts of an ordinary boilerfurnace in which A represents the ash pit; A', the ash door, and E thefront wall supporting the front end of the grate-bars G, and having anordinary fire door C.

The furnace outlines above referred to, are used for the purpose of moreclearly indicating the location of my air supplying device, and not tosuggest any particular kind of furnace, as my appliance may be used inconnection with a great variety of furnaces.

My air supplying device is located as indicated by D Fig. 1, that iswholly within the front wall of the furnace or partly within the wall asindicated in Fig. 4, in which. case it extends beyond the face of thewall into the tire chamber as illustrated at P.

The construction of my air supply box is illustrated in Figs. l, 2, and3. The outer opening F leading from the outside of the front wall, isadapted to receive air, and, if desired, a jet of steam. The airentering at F passes first into the narrow chamber F', thence around theends of the division Wall D2,

through the passages F2 F2 to the chamber F3; thence through the openingF4 at or near the center of the partition D3 to the chamber F5 Fig. 3,which extends the whole length of the lower part of the box.

K Figs. 2 and'3 is a horizontal partition over the chamber F5 from thepoints indicated by L and L Fig. 2, leaving a free space at each end sothat air may flow from the chamber F5 up into the chamber F5. From thechamber F6 the air or other supporter of combustion may iiowthrough thesmall openings F7 F7, into the fire chamber and assist the combustiontherein going on. The projections indicated by P P act as radiators toreceive heat from the walls of the box and transmit it to the air as itflows past and about them.

In Fig. 4, the supply box has added to its front wall a member Pextending along its front and adapted to receive air from the chamber FGand discharge it through the openings T T into the tire chamber.

If desirable, steam may be admitted through the pipe S Fig. 4.

I claiml. In combination with the front wall of a furnace, and locatedpartly or wholly therein, an air supplying and air heating box, having avertical division wall D5 and a horizontal division wall K, whereby twochambers F5 and F are formed, the lower chamber F5 being directlyexposed to the heat of the lire and serving as a passage through whichair flows into the outlet chamber F5 said chamber being provided withopenings F7 F7,sub stautially as and for the purpose set forth.

2. In combination with the front wall of a furnace, and located partlyor wholly therein, an air supplying and an air heating box having avertical division wall and a horizontal division wall, whereby twochambers F5 and Fare formed within the box as described, and radiatingprojections P P, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FLORENTINE A. JONES.

Witnesses: a

EDWARD B. MANAfroN, PETER S. MAHER.

IOC

